How much do addition contractors typically cost?
- Middlesex, New Jersey Average$68,356
- Typical Range$0 - $100,000
- Low End - High End$3,700 - $200,000
"Great work! I would highly recommend them."
9719AFB6914CEDE56AA9E49C32F6E7AA053303B32B37E307BDFA337B54594A82 A. in September 2026

"The proposal process was great."
04C2E74AA5159BDF0DC308078EFA9155DD72AC5E0C4B3B7D32AEFED954C2C800 7. in September 2026

"Very efficient and courteous."
67641A37CE5A6F0177FAEED93AD5F7BDA2157C84E985728187A667B79A609659 C. in September 2026

Bathroom Remodel, Turnkey Projects, Kitchen Remodel , and 2 more
About us: "Diamond Ridge Contracting, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business."
In business since 2000
About us: "We have been in the business for over 30 years, fully insured & we hold a DEP Lic., New Home for NJ Builders Lic., NJ Home Improvement Lic.,Certified in Mold Remediation Mold Contractor, & Certified Lead Removal Lic. We have full crews of framers, roofers, electricians, plumbers etc.. We own our own dumpsters & equipment. We have done projects from small bathrooms to new homes. We are fully insured and have Worker's Compensation."
In business since 1997
About us: "Ernest & Sons General Contractors and Landscaping Design We meet all of your residential needs. * Landscape * Hardscape * Shrubs * Mulching * Planting * Top Soil * Sod * Shrub Removal * Spring Clean Up * Driveways * Pavers * Patios * Steps * Curves * Retaining Walls * Seal Coating We have over ten years in business and landscape design. We provide experienced quality work at reasonable rates. Tell us what you have in mind and we will build it for you and your family. Call Us!"
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Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
You can use HomeAdvisor to help evaluate a contractor’s qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a pro’s HomeAdvisor profile, and sometimes, his or her website.
Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Middlesex Addition & Remodeling Contractors are rated 3.8 out of 5 based on 27 reviews of 27 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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